package helper

import (
	"bytes"

	"github.com/Depado/bfchroma"
	"github.com/russross/blackfriday/v2"
)

// RenderMarkdown renders input to html with chroma syntax highlighting if wanted
func RenderMarkdown(input []byte, chromaRenderer bool, chromaStyle string) []byte {
	var options []blackfriday.Option

	if chromaStyle == "" {
		chromaStyle = "monokai"
	}
	if chromaRenderer {
		options = []blackfriday.Option{
			blackfriday.WithRenderer(
				bfchroma.NewRenderer(
					bfchroma.Style(chromaStyle),
				),
			),
		}
	}

	// fix \r from markdown for blackfriday
	input = bytes.Replace(input, []byte("\r"), []byte(""), -1)
	return blackfriday.Run(input, options...)
}